Results 21 to 30 of about 27,494 (165)

Preparation and in situ use of unstable N-alkyl α-diazo-γ-butyrolactams in RhII-catalyzed X–H insertion reactions

Beilstein Journal of Organic Chemistry, 2020
N-Alkyl α-diazo-γ-butyrolactams, previously found to be unstable and to undergo unproductive dimerization to bishydrazones, were successfully converted immediately to various X–H insertion products with alcohols, aromatic amines and thiols via an in situ
Maria Eremeyeva, Daniil Zhukovsky, Dmitry Dar’in, Mikhail Krasavin   +3 more
doaj   +1 more source

Michael addition of aromatic and aliphatic amines to unsaturated olefines in the presence of TMSCl under solvent free conditions [PDF]

شیمی کاربردی روز, 2008
An operationally simple and highly fast protocol for TMSCl (10 mol%) catalyzed conjugate addition of aromatic and aliphatic amines derivatives to unsaturated carbonyl compounds in good to excellent yields has been developed.
Najmadin Azizi
doaj   +1 more source

Phthaloylation of amines, hydrazines, and hydrazides by N-substituted phthalimides using recyclable sulfated polyborate

Results in Chemistry, 2022
An efficient, fast, and environmentally gentle protocol for phthaloylation of amines, hydrazines and hydrazides via transamidation is described. The current research focuses on the phthaloylation of alicyclic, aliphatic, aromatic, heterocyclic amines ...
Prerna Ganwir, Swati Jaydeokar, Ganesh U. Chaturbhuj   +2 more
doaj   +1 more source

Mild Biamidine-Transfer Conditions for the Synthesis of Aliphatic Biguanides

SynOpen, 2021
This study focuses on the development of new synthetic pathways to monosubstituted biguanides from amines. An exhaustive comparison of the conditions and reagents used for biamidine transfer was performed.
Rostyslav Bardovskyi, Marie Fabre, Cyril Ronco, Rachid Benhida   +3 more
doaj   +1 more source

Deaminative bromination, chlorination, and iodination of primary amines

iScience, 2023
Summary: The primary amino group has been seldom utilized as a transformable functionality in organic synthesis. Reported herein is a deaminative halogenation of primary amines using N-anomeric amide as the nitrogen-deletion reagent.
Jiang-Hao Xue, Yin Li, Dong-Hang Tan, Fang-Hai Tu, Yuan Liu, Qingjiang Li, Honggen Wang   +6 more
doaj   +1 more source

The effect of iodo substituents in bis(phenoxyimine) zirconium complexes on the catalytic performance of homogeneous ethylene polymerization reactions [PDF]

Polyolefins Journal, 2018
Eight different zirconium phenoxyimine complexes were synthesized, characterized and tested as catalysts for ethylene polymerization. The phenoxyimine compounds were prepared by condensation of substituted salicylaldehydes with aliphatic and aromatic ...
Andrea Rimkus, Helmut Alt
doaj   +1 more source

Trimethylamine emissions in animal husbandry [PDF]

Biogeosciences, 2014
Degradation of plant material by animals is an important transformation pathway in the nitrogen (N) cycle. During the involved processes, volatile reduced alkaline nitrogen compounds, mainly ammonia (NH3) and aliphatic amines such as trimethylamine ...
J. Sintermann, S. Schallhart, M. Kajos, M. Jocher, A. Bracher, A. Münger, D. Johnson, A. Neftel, T. Ruuskanen   +8 more
doaj   +1 more source

Quantifying the Molecular Structural Effects on the Reaction Kinetics and Equilibrium Between Organic Amines and CO₂: Insights from Theoretical Calculations

Separations
Understanding how molecular structure governs the reactivity of organic amines with CO2 is essential for the rational design of next-generation carbon-capture solvents.
Yupeng Cui, Qiyue Zhao, Yousheng Zhou, Chuanlei Liu, Hui Sun   +4 more
doaj   +1 more source

Copper-Catalyzed Three- Five- or Seven-Component Coupling Reactions: The Selective Synthesis of Cyanomethylamines, N,N-Bis(Cyanomethyl)Amines and N,N'-Bis(Cyanomethyl)Methylenediamines Based on a Strecker-Type Synthesis

Molecules, 2013
We have demonstrated that a cooperative catalytic system comprised of CuCl and Cu(OTf)2 could be used to effectively catalyse the three-, five- and seven-component coupling reactions of aliphatic or aromatic amines, formaldehyde, and trimethylsilyl ...
Takeo Konakahara, Reiko Ikeda, Norio Sakai, Daiki Inoda, Nobuaki Takahashi   +4 more
doaj   +1 more source

Bifunctional Catalysis: Direct Reductive Amination of Aliphatic Ketones with an Iridium-Phosphate Catalyst

Molecules, 2010
Chiral amines are one of the ubiquitous functional groups in fine chemical, pharmaceutical and agrochemical products, and the most convenient, economical, and eco-benign synthetic pathway to these amines is direct asymmetric reductive amination (DARA) of
Barbara Villa-Marcos, Chaoqun Li, Keith R. Mulholland, Philip J. Hogan, Jianliang Xiao   +4 more
doaj   +1 more source